Dwyer 美國德威爾

PG系列差壓開關(guān) dwyer 德威爾

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美國德威爾壓差表流量計(jì) 差壓計(jì) 差壓開關(guān) 差壓變送器
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產(chǎn)品描述：美國Dwyer德威爾儀器儀表制造有限公司(Dwyer Instruments,Inc.)是一家對差壓、溫度、液位和流量的測量,變送和控制等方面擁有眾多精密儀器儀表產(chǎn)品并且在價(jià)格上有強(qiáng)競爭力的儀器儀表制造公司。
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PG系列差壓開關(guān)
產(chǎn)品說明：
外部調(diào)整設(shè)定點(diǎn)，全密封快開開關(guān)或水銀開關(guān)
Large sensitive diaphragm and reliable, time proven mechanical design are combined in Series PG pressure/differential pressure switches. For use with air and other compatible gases, they feature excellent ±1% of full scale repeatability, clear easy-to-read scale and convenient external setpoint adjustment.
Application flexibility is assured by a large variety of switching options including SPST, SPDT, DPST and DPDT; opening or closing on increasing pressure, vacuum or differential. PR and PRL models add manual reset operation on increasing or decreasing pressure. Mercury switches or hermetically sealed snap switches are available where high humidity would be a problem. If vibration or other factors preclude the use of mercury, snap switches can be provided. Standard housing is NEMA-1. Optional enclosures can be supplied for weather resistant and explosion-proof requirements.
產(chǎn)品規(guī)格：
Wetted Materials: Fairprene, brass, steel, and aluminum.
Temperature Limits: -10 to 180°F (-23 to 82°C).
Pressure Limit: Single Pressure Use on High Side: sustained pressure: 15 psig (1.0 bar); surge limit: 20 psig (1.4 bar). Differential Pressure Use: sustained pressure, range P1: 2 psig (.14 bar); sustained pressure, range P2: 10 psig (0.7 bar).
Enclosure Rating: General purpose. Weatherproof and explosion-proof optional.
Repeatability: ±1% of full range.
Switch Type: See Ordering page.
Electrical Rating: See Ordering page.
Electrical Connections: Screw type.
Conduit Connection: 7/8" (22.23 mm) hole for 1/2" (12.7 mm) conduit hub.
Process Connection: 1/2" male NPT and 1/8" female NPT used for single positive pressure or high differential pressure, 1/8" female NPT used for single vacuum or low differential pressure.
Mounting Orientation: Vertical.
Set Point Adjustment: External screw.
Weight: 4.5 lb (2 kg).
Deadband: See Ordering page.
Agency Approvals: UL, CSA, FM for mercury switch models. UL only on snap switch models.

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